Ornamental stitch sewing machines



Dec. 2, 1958 R. E. JOHNSON 2,862,463

ORNAMENTAL ST-ITCH SEWING MACHINES Filed Nov. 29, 1954 15 Sheets-Sheet 1VENTOR.

Ralph E. Jqhnson WITNESS BY 7 ZW DZ 'O b 2 ATTORNEY Dec. 2, 1958 v I R.E. JOHNSON I 2,862,458

I ORNAMENTAL STITCH SEWING MACHINES ,Filed Nov. 29, 1954 l5 Sheets-Sheet2 Fig. 2.

uvmvrozg Ralph E. Johnson WITNESS q L Ma y 5 ATTORNEY Dec. 2, 1958 R. E.JOHNSON ORNAMENTAL STITCH SEWING MACHINES 15 Sheets-Sheet 3 Filed Nov.29, 1954 'INVENTQR. Ralph E Johnson ATTORNEY WITNESS R. E. JOHNSONQRNAMENTA'L STITCH szwmc; MACHINES Dec. 2, 1958 15 Sheets-Sheet 4 FiledNov. 29, 1954 WITNESS ATTORNEY R. E. JOHNSON ORNAMENTAL STITCH SEWINGMACHINES Dec. 2, 1.95s

15 Sheets-Sheet 5 Filed NOV. 29, 1954 INVENTOR. Ralph E. Johnson WITNESSATTORNEY kDec. 2, 1958 R. E. JOHNSON ORNAMENTAL STITCH szwmc; MACHINESl5 Sheets-Sheet 6 Filed Nov. 29, 1954 INVENTOR. Ralph E. Johnson WITNESSATTORNE Y Dec. 2, 1958 R. E. JOHNSON 2,862,468

Filed Nov. 29, 1954 ORNAMENTAL STITCH SEWING MACHINES 15 Sheets-Sheet 7lo I 10,

WITNESS mmv ozp Ralph E. Jbhnson ATTORNEY Dec. 2,1958 R. E. JOHNSONORNAMENTAL STITCH SEWING MACHINES 15 Sheets-Sheet 8 Filed Nov. 29, 1954hn I I l i l I I l llTll .wW HW VMZZ VI/Z/ mmvro. .Ralph E. John spnWITNESS ATTORNEY Dec. 2, 1958 R. E. JOHNSON ORNAMENTAL STITCH SEWINGMACHINES 15 Sheets-Sheet 9 E x in INVENTOR. Ralph E. Johnson Filed Nov.29, 1954 WITNESS A-TTORNE Y Dec. 2, 1958 R. E. JOHNSON 2,362,453

ORNAMENTAL STITCH SEWING MACHINES Filed Nov. 29, 1954 15 Sheets-Sheet'10 Ralph E. Johnson Fig. 29. BY

f g/law 7/w Mmbw ATTORNEY WITNESS Dec. 2, 1958 R. EL JOHNSON 2,862,453

ORNAMENTAL STITCH SEWING MACHINES Filed Nov. 29, 1954 15 Sheets-Sheet 11lllf 6 ATTORNEY Dec. 2, 1958 R. 'E. JOHNSON 2,862,468

ORNAMENTAL s'mcn SEWING MACHINES Filed Nov. 29, 1954 15 Sheets-Sheet l2INVENTOR.

Ralph E. Johnson WITNESS ATTORNEY Dec. 2, 1958 R. E. JOHNSON 2,852,458

ORNAMENTAL swncn SEWING MACHINES Filed Nov. 29, 1954 15 Sheets-Sheet 1sStrai ht Stitching Left Center Right -To vary any stitch pattern belowset the red lever to a position other than 3.

ll ll ll II II II I! ll To decrease width of any stitch pattern belowset the red lever to a position other than 5.

A BAB WWW '2 mm um MM 0120 W W 010- MM oar-o W 0120:: M 01211 m two mm WMr. we

m 0:23: W ovum WOIUI M 01mm WWW 010- WUIZUJ WWW 1p m QIF'I W oil-m 3imit, W worn INVENTOR Ralph E. Johnson WlTNgS S Flg 49 BY MJQ QL .AORNEY Dec. 2, 1958 R. E. JOHNSON ORNAMENTAL STITCH SEWING MACHINES 15Sheets-Sheet 14 Filed Nov. 29, 1954 JNVENTOR, Ralph E. Johnson ATTORNEYWITNESS wfl b Dec. 2,1958 R. E. JOHNSON 2,862,468

ORNAMENTAL STITCH SEWING MACHINES Filed Nov. 29, 1954 A 1 15Sheets-Sheet 15 see as! Hg. 60.

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' INVENTOR 1" Ralph E. Johnson WITNESS BY United States PatentORNAMENTAL STITCH SEWING 'MACHINES Ralph E. Johnson, Mountainside, N.1., assignor to The Singer Manufacturing Company, Elizabeth, N. J., acorporation of New Jersey Application November '29, 1954, Serial N0. 471,766 27 Claims. .(Cl. 112-158 This invention relates to improvements inornamental stitch sewing machines and has for an object to provide sucha machine with novel mechanism whereby the machine can be made toproduce a large number of ornamental designs without any change in theconstruction of the machine.

A more'specific object of the present invention is to provide a zigzagstitch type ornamental stitch sewing machine with a plurality ofdifferent response-producing records for controlling the actions of thezigzag stitch mechanism and means whereby such recordsmay be selectivelyemployed in different combinations for effecting various patterns ofornamental stitches.

Another object of the present invention is to provide a sewing machinewith a novel stitch forming mechanism including rotary loop-taker andreciprocatory needlebar mechanisms which cooperate together;in theformation of lock stitches.

'Another object of the present invention is to provide a sewing machinewith a novel and meritorious presserbar mechanism for effectivelymaintaining the work ;material in proper relation with thework-supporting bed of a sewing machine.

A further object of the invention is to provide a sewing machine withnovel means for rendering the workfeeding mechanism ineffective at thewill of .the operator.

Yet another object of the present invention is toprovide a sewingmachine with novel means for clamping either one .or a pair of needlesto a reciprocatory needlebar mechanism.

With the above and other objects in view, the invention comprises thedevices, combinations andarrangements of parts hereinafter described .inconnection with the accompanying drawings which illustrate a preferredembodiment of the invention from which the several features of theinvention and the advantages attained thereby will be readily understoodby those skilled in the art.

In the drawings,

Fig. 1 represents a front perspective view of a sewing machine in whichthe present invention is embodied.

Fig. 2 represents a side elevational view in axial cross-section of thesewing machine illustrated in Fig. 1.

Fig. 3 represents a top plan view of the sewing machine disclosed inFig. l with the cover plate removed therefrom.

Fig. 4 represents a fragmentary elevational view of the actuating drivefor the needle-bar.

Fig. 5 represents a sectional view taken substantially along the line 55of Fig. 2.

Fig. 6 represents a sectional view of the machine taken substantiallyalong the line 66 of Fig. 3, and illustrating a portion of theneedle-bar mechanism.

Fig. 7 represents, on an enlarged scale, a portion of the mechanism asis illustrated in Fig. 3. I

Fig. 8 represents a sectional view taken substantially along the line 88of Fig. 7.

2,862,468 Fatented Dec. 2, i953 Fig. 9 represents a sectional view takensubstantially along the line 9-9 of Fig. 3.

Fig. 10 represents .a sectional view taken substantially along the line10 10 of Fig. 9.

Figs. 11, '12 and 13, inclusive, representdiagrammatic viewsillustrating various positions of the mechanism disclosed essentially inFig. 7. d

Fig. 14 represents, on an enlarged scale, a sectional view takensubstantially along the line 14-14 of Fig. 3.

Fig. 15 represents, on a reduced scale, a sectional view takensubstantially along line 15-15 of Fig. 7.

Fig. 16 represents, on a reduced scale, a sectional view takensubstantially along the line 1616 of Fig. 7.

Fig. 17 represents, on a reduced scale, a sectional view takensubstantially along the line 1717 of Fig. 3.

Fig. 18 represents, on an enlarged scale, a sectional view taken alongthe line 1818 of Fig. 3.

Fig. 19 represents a diagrammatic view illustrating the paths ofmovement through which the needle-bar is operated with respect to therotary loop-taker and the needle-bar actuating mechanism.

Fig. 20 represents a top plan view of the rotary looptaker with itsinternal mechanisms removed therefrom.

Fig. 21 represents, on an enlarged scale, a fragmentary bottom plan viewof the machine as illustrated in Fig. 1 with the bottom cover plateremoved therefrom Fig. 22 represents, on an enlarged scale, a sectionalview taken substantially along the line '2222 of Fig. 21.

Figs. 23 and 24 represent a portion of the throatplate lifting mechanismin different stages of its operation.

Fig. 25 represents, on an enlarged scale, a sectional view takensubstantially along the line 2525 of Fig. 21.

Fig. 26 illustrates an indicia plate which, as illustrated .in Fig. 1,is adapted to be secured to the bed of the sewing machine proper.

Fig. 27 represents a top plan view of a fragmentary portion of thesewing machine bed illustrating a portion of the bed with its slideplate partially removed and with of the throatthe type having a circularaperture adapted for the reception of a needle which is not shiftedlaterally.

Fig. 33. represents atop plan view of the rotarylooptaking mechanism,together with the means whereby the bobbin carrier is maintained inproperposition within the rotary loop-taker.

Fig. 34 represents a sectional view .taken substantially along the line34-34 of Fig. 33.

Fig. .35 represents a top plan view of the rotary loop taking element.

Fig. 36 represents a sectional view taken substantially along the line3636 of Fig. 35.

Fig. 37 is a fragmentary view of a portion of the rotary loop-taker andillustrating the manner in which the hook beak is formed.

Fig. 38',represents a fragmentary sectional view taken closed in Figs.41 and 43 and illustrating the loop-taker in that position wherein theneedle-thread loop has been expanded about the bobbin-carrier and is ina position where it is about ready to be cast off from thebobbincarrier.

Fig. 45, like Figs. 41 to 44 inclusive, illustrates a top plan view ofthe rotary loop-taker and shows the looptaker in the position it assumesjust after the needlethread loop has been cast off the bobbin-carrierand is being taken up by the so-called needle-thread take-up mechanism.

Fig. 46 represents an instruction plate of the type secured to theinterior portion of the top cover plate for.

the purpose of instructing the operator in the setting of the variouscontrols for the ornamental stitch mechanism of the present machine.

Fig. 47 represents an elevational view of the indicia 'plate whichsurrounds the hand controls of the present machine.

Figs. 48, 49 and 50 each illustrates a pattern of or-namental stitchingwhich may be produced on the present machine.

Fig. 51 represents a side elevational view of a portion of the sewingmachine needle-bar and its associated needle clamp.

Fig. 52 represents a sectional view taken substantially along the line5252 of Fig. 51.

Fig. 53 represents a left side elevational view of the mechanismdisclosed in Fig. 51.

Fig. 54 represents a sectional view taken substantially :along the line54-54 of Fig. 51.

Fig. 55 represents a sectional view taken substantially along the line5555 of Fig. 51.

Fig. 56 representsavertical sectional view of the mechanism disclosed inFig. 51.

Fig. 57 represents a perspective view of a needle-thread guide elementwhich is-adapted to be secured to the needle clamp mechanism in a manner:as is best disclosed in Fig. 51. e

Fig. 58 represents a fragmentary top plan view of the rotary loop-takermechanism and shows the relation between the twin needles and theloop-taker.

Fig. 59 represents a view similar to 'Fig. 55 and shows the needle-barclamp as provided with'a pair of twin needles.

Fig. 60 is'similar to Fig. 55 but illustrates the needleclampingmechanism as being provided with two needles instead of one.

Fig. 61 represents a right side elevational view of the needle bar shownin Fig. 51.

Fig. 62 represents aside elevational view of a typical type of sewingmachine needle which is employed in the present machine.

General sewing machine structure As illustrated in the drawings, theframe of the sewing machine in which the present invention isincorporated comprises a substantially rectangularrshaped base 1 formingat its upper side a work-supporting surface or bed plate and provided atits under side with a plurality of downwardly extending side walls 22and end walls elevation view taken'of the left Fig. 44 represents a topplan view similar to that dis- .4 33 forming a box-like enclosure, thedownwardly facing opening of which is normally closed by a bottom coverplate 4 held in place by a thumb nut 5 threaded over a stud 6 extendingdownwardly from the under face of the base 1.

Suitably secured upon the hollow bed 1 is a vertically disposed hollowstandard 7 which carries an overhanging bracket-arm 8 terminating in ahollow head 9 in which is mounted a reciprocatory needle-bar 10 andpresser-bar 11. The upper part of the bracket-arm 8 is closed by acover-plate 12 held in place by screws not herein shown. A main drivingshaft 13 disposed within and lengthwise of the overhanging bracket-arm 8is journaled in bearings 14 and 15 (see Figs. 2 and 3) which are securedin the sewing machine frame forming a part of the bracketarm 8. The armstandard end of the shaft 13 is connected with a hand wheel 16 in amanner which is best disclosed in U. S. Patent No. 2,617,375, datedNovember 11, 1952.

Also secured to the main shaft 13 in a manner as is disclosed in theabove noted patent is a gear 17. The

main shaft 13, as is hereinafter described in more detail,

drives the needle-bar 10 carried in the head 9. A looptaker actuatingshaft 18 (see Fig. 21) journaled in suitable bearings' 19 and 20 mountedin the base of the machine is driven by the main shaft 13 through bevelgears 21 and 22, shaft 23, and bevel gears 24 and 25. A pair ofactuating eccentrics 26 and 27 are formed integral with the gear 21 andthe combination is held in place upon the shaft 13 by a set screw 28.The eccentrics 26 and 27 actuate pitmans 29 and 30 respectively, andthese in turn actuate rock-shafts 31 and 32 (see Fig. 5) in aconventional manner. These rock-shafts 31 and 32 .impart the usualfeeding movements to a conventional feed-dog 33 by way of a feed-bar 34which is connected with the shafts 31 and 32 by cranks 35 and 36 ofwhich the latter is connected to the bar 34 by means of a link 37.

,7 V The arm standard 7 is especially designed to provide adequate spacefor housing sewing machine parts. To

this end, the arm standard is made in substantially the shape of apyramid, the lower portion of the standard beinglarger than the upperportion. Within the lower portion of the standard is provided a housinggenerally 'designated by the numeral 38 in which is mounted a verticallydisposed electric motor 39. As is best disa closed in the above notedPatentNo. 2,617,375, the arm standard 7 of the present machine isprovided with a hollow cylindrical wallv portion 40 for receiving theextended distal end of the motor drive shaft, the upper portion of whichis designated by the numeral 41 and is illusas well as the feedrock-shafts 31 and 32.

As may be best seen in' Fig. 1, the present machine is provided with aconventional form of stitch-length con trol lever 45 which projects intothe hollow standard 7 andis pivotally mounted therein upon a pivot pin46 and i is'forrned with a guideway 47 which is tracked by a pin 148carried by the pitman 29. Thus, as the lever 45 is shifted about the pin46, it will lengthen or shorten the effective throw of the feedingmechanism or reverse the ;whereby the plate,:53::may .be grasped Tbyanea-r 55 and swung: back andiforthfromanopenedrtoa closedpos itionthereby.to;provide. accessfto.the internal portion of the head 9.

The forwardend portion ofjthe main shaftlS extends in theconventionalzmanner.intothe hollowhead 9'for the purpose ofreciprocating therneedle-thread vtake-up arm 56.

Referringparticularly to Eigsjl and 2, an intermediate portion of thecover-plate 12 is providedgwith an opening 57.which is normallyyclosedby a p1ate 58 Which is hinged in a manner not ,hereinshown at itsrearward portion thereby to permit-,theoperator to gain access to theinternal portion of thegmachinefor purposes which will hereinafterbedescribed.

With reference to Fig.1, theintermediate portion of the bracket-M11158is provid d witha light shade 59 beneath which isdi posed theusualsewing light. bulb 60, which lighting mechanism together with itsshade59 is shown, in the U. S. Patent No. 2,677,042, dated April 27, 1954.

Ornamental Y stitch mechanism The machine, in accordance with thepresent invention, comprises a zigzag type of needle-bar which isadapted, in addition to being reciprocated in a direction of its length;to be periodically shifted back and forth laterally of the directionofwork-feed-to produce in cooperation with the rotary loop-taker-zigzagstitches. In accordance with th'e present invention, the machine isprovided with a group of stacked or nested-cams which are rotated insynchronismwith the-movem-ents-of the needle-bar; a pair of camfollowers which arejadapted-to track various combinations ofthe cams,and means for integrating the movements of the two'cam followersand'for-transferring such integrated movements tothe needle-barmechanism for the purposeof moving-it back and forth laterally of thedirection of needle feed. Also, the present machine is provided withoperator-influenced means for shifting the cam followers therebytopermit the operator to select various cams for the purpose ofeffectingdifferent patterns of movement of the needle-bar. It is to beparticularly understood that each of the cams of the group of cams isdilfcrent from its associate cams so that each cam in effect representsa-different pattern of ornamental stitch movement of the needle-bar. Inthis connection, it is to be further appreciated'that with two camfollowers various cams may be selected to operate simultaneously totheend that a great variety-of ornamental stitches may be performed withthe present mechanism,

Referring particularly to Figs. 2, 3, 7 and 9, the main rotary shaft 13is provided intermediate its ends with a worm gear 65 which meshes'witha wheel gear 66- formed integrally with a sleeve 67 rotatably. mountedupon a cylindrical stud 65 whose lower portion 69- is mounted within anaperture 71 formed in the bracket-arm 8. A set screw 71 locks the member69 in afixed position. From this, it isto be understood that rotation ofthe main shaft 13 will, through the gears 65 and 66, rotate the sleeve67 about the member 68.

Referring particularly to Fig. 9, the sleeve 67 is provided with ashoulder 72 upon which rests a stack of eight difierent cams whicharegenerally designated by the numeral 73. These cams '73 are centrallyapertured so .as to be snugly fitted about the upper cylindrical portionof the member 67 and of these cams the lower seven ,are adapted, to, beclamped to the sleeve member 67 by means of a shoulder screw 75 whichisthreaded within the upper portion of the member 68 and. which bearsagainst a retaining plate 76,.for the purpose of locking the lower sevencams against the aforementioned sleeve shoulder 72 thereby to insurethat all of these cams will rotate in synchronism with. the sleeve 67.

In order to time the various cams properly, there is provided a timingpin 77 which is snugly received within an aligned aperture 78 formedwithin each of the various cams. This locking pinis maintained in afixed vertical position due to the fact that it is provided with a slot79 which is entered by a peripheral portion of the retaining member 7'6.The. plate 76 is in turn secured to the sleeve 67 by three screws80-980, each of which is threaded directly into the upper portion of thesleeve 67 in a manner as best disclosed in Fig. 9.

Resting upon the retaining plate 76 is the upper or eighth cam member,designated by the word Special, which, like the remaining cam elements,is provided with an aperture 78 which receives the locking pin 77. Thisupper cam. member is provided with a collar 81 which is integrallysecured to the cam so that an operator may, after lifting'the cover 58,remove this cam and replace it with other selected cams. Quiteobviously, however, this upper cam with its handle member 81 will rotatein synchronism with the remaining cams which make up the cam group 73for the reason that it is mated with the locking pin 77'. The structureof this upper cam and its handle member 81 is disclosed and claimed inmy copendiug U. S. continuation-impart patent application Serial No.636,023, filed January 24, 1957.

As may be best observed from Fig. 9, the lower portion of the sleeve 67is provided with a large bore 82 within which is disposed a boss portion83 of a combined needle bight and field selector member 84. The boss 8-3is turnably mounted upon the vertical pin 68 and it rests upon ashoulder 85 of the sewing machine bracket-arm frame 8. The oppositelydisposed end portions of the member 84 carry in a manner as is bestdisclosed in Figs. 2, 8, 9 and 10, a circular compound cam member whichis generally designated by the numeral 86. As will later be described infurther detail, the member 86 is provided with three stepped concentriccam facesA, B and C and projecting from a peripheral portion thereof isa needle bight and field selector arm 87 Whichis secured thereto bymeans of a screw 88. It is to be understood that the arm 87 provides anoperator-influenced means whereby the entire member 84 with its camportion 86 may be shifted back and forth about the pivot member 68.

As is best disclosed in Figs. 3, 7 and 9, the interior portion of thebracket-arm 8 is provided with a pair of stop arms 8989, each ofwhich isadjustably secured to the bracket-arm by means of a screw 90. From Fig.7, it is to be understood that the arms 89-89 cooperate with the needlebight and field selector member 84 so as to limit the rotary movementsthereof.

Referring particularly to Figs. 2, 8 and 10, the needle bight and fieldselector member 84 is provided at its peripheral portion with a radiallydisposed cylindrical guide aperture 91 which is adapted to receive forpurposes hereinafter described a spherical guide head 92 which iscarried by the link or pitman member 93. Still referring to Figs. 7, 8,9 and 10, the upper portion of the three-part cam member 86 is formedwith a recess 94 within which is disposed a lubricating wick 95, theopposite end portions of which depend downwardly into a pair ofapertures 96 and 97. Asmay be best seen in Fig' 3, all ofthe cams 73 areprovided with an aligned aperture 98 which is disposed over the wick vso as to permit the operator to oil the wick from an oil can in theusual fashion and thereafter the wick will function to lubricate variousparts of the sewing machine including the aforesaid guide ball 92 of thepitman 93.

Cooperatingwith the stacked cams 73 are a pair of cam followers 99 and100- of which the forward follower '76.

99 is slidably androtatably mounted upon an upright post 101, the lowerportion 102 of which is mounted within an aperture 103 formed in thebracket-arm 8 and is locked in position by means of a set screw 104. Therear cam follower 100 is similarly rotatably and slidably mounted uponan upright post 105 whose lower end 106 is secured within an aperture107 formed in the bracketarm 8 by means of a set screw 108. The free endportions 109 and 110 of the cam followers 99 and 100 are adapted toengage the peripheral portions of the aforementioned cams 73 and 86, aswell as the substantially vertically disposed front face 111 of amotion-integrating plate which is generally designated by the numeral112. As is best disclosed in Fig. 8, the plate 112 is provided with apair of vertically aligned apertures 113, 113 which are pivotallymounted upon pins 114 carried on the end of cylindrical members 115 and116 which are respectively mounted in apertures 117 and 118 provided inthe forked end portion 119 of the aforesaid pitman 93. From this, it isto be understood that the plate 112 is pivoted in the manner of atrunnion upon the pins 114, 114.

Opposite the forked end 119 of the pitman 93, the latter member isprovided with a pair of apertures 120-120 through which pass cap screws121121 which function adjustably to lock that end of the pitman to aC-shaped block 122 in a manner such that the pitman 93 may be shiftedlengthwise of itself and relative to the block 122 for adjustmentpurposes. Referring particularly to Figs. 2, 7 and 18, it is to beunderstood that the C-shaped block 122 has the free end portions of itslimbs pivotally receiving a pin 123 whose intermediate portion is lockedwithin a crank or needle-bar gate 124 by way of set screws 125125. Thisgate 124 is apertured as at 126 so as to be pivotally mounted upon adepending cylindrical member 127 in a manner as will be hereinafterdescribed in further detail. The gate member 124 is maintained in aproper upright position upon the member 127 by way of a collar 128 whichis fastened to the member 127 by a set screw 129. From the above, it isto be understood that the gtae 124 affords a pivotal connection whichwill permit the left hand end of the pitman 93, as viewed in Fig. 7, toshift endwise of itself for the purpose of shifting the needle-bar backand forth laterally of the direction of work feed in a manner as will bedescribed hereinafter in further detail.

Referring particularly to Figs. 2, 7 and 18, the pitman 93 is adaptedtobe spring biased at all times in a righthand direction as is viewed inFig. 7 by way of a coil spring 130 which has its one end portion wrappedabout a distal end portion of the pivot pin 123 while its other endportion is anchored to an arm 131 of a pivot member 132 which, as isillustrated in Fig. 14, is pivotally mounted upon the cylindricalportion 133 of a pin whose reduced lower end portion 134 is anchored ina boss 135 provided in the interior portion of the bracket-arm 8. Themember 132 is provided with another arm portion 136 which, asillustrated in Fig. 7, is adapted to engage the rear face 137 of themotion-integrating plate 112 so as to bias the plate together with thepitman 93 in a right-hand direction toward the cam followers 99 and 100,thereby to force such followers into engagement with various selectedcams of the cam group 73 or 86.

Each of the cam followers 99 and 100 is adapted to be shifted up anddown along its associated post 101 or 105 so that it may be brought inengagement with a respective one of the cams for the purpose ofimparting Various patterns of movement to the pitman 93 and subsequentlyto the laterally shiftable needle 10. Referring particularly to Figs. 7and 17, each of the cam followers 99 and 100 is provided with a slot 138which is adapted to receive a knife-like element 139 secured by means ofa screw 140 to a respective one of a pair of cam-selector arms 141 and142 which are in turn mounted upon a cross-shaft designated by thenumeral 143.

It is to be particularly observed that each of the substantially uprightposts 101 and 105 upon which the cam followers are respectively mountedis provided with a plurality of slots 144144, which are so arranged thatwhenever either one of the cam selector fingers 139139 is. engagedwithin one of such slots its respective cam follower 99 or has itstracking element 109 or properly engaging a respective one of thevarious cams 73 and 86. Furthermore, as hereinabove noted, the coilspring 130, by hearing against the arm 131, will urge themotion-integrating plate 112 against each of the tracking elements 109and 110 so as to, in 'turn, force these elements into engagement with aselective pair of the cams. The movements of the cams in response to therotation of the main shaft 13 will, of course, oscillate thecamfollowers 99 and 100 about their respective posts 101 and 105 inaccordance with the peripheral configurations of the selected cams.

An operator-influenced mechanism has been provided with the presentmachine for shifting each of the cam followers 99 and 100 up and downalong its associated posts 101 and 105, which mechanism includes a pairof cam-selector knobs 150 and 151 of which the knob 150- is made fast tothe forward end portion of the cross shaft 143, while the rear endportion of the shaft 143 is slidably mounted within a cylindrical sleeve152 which is supported within the rear wall portion of the bracketarm 8.An intermediate portion of the shaft is slidingly supported within anupright bearing member 64 carried by the bracket-arm 8. Adjacent therear portion of the shaft 143 is adjustably mounted by means of a screw154 the cam selector 142 in a manner such that whenever the cam-selectorknob 150 is shifted inwardly it will disengage the blade 139 of thecam-selector arm from a respective one of the post slots 144 so that theselector knob may be rotated and thereby either elevate or depress thecam follower 100 so that the cam follower may be made to engage adifferent cam. In this latter connection, it is to be understood thatthrough a rearward movement the cam-selector arm 142 will engage anextended portion 156 of the cam follower 100 for the purpose of rotatingthe follower about the post 105 in a clockwise direction as viewed inFig. 7 so as to withdraw the cam followerfrom engagement with the camsand against the biasing action of the spring so that upon a downwardshifting movement of the cam-selector arm 142, the tracking element 110of the arm 100 will not be caught against the peripheral portion of anyone of the cams. Whenever the cam follower 100 is placed in a newposition, it is to be understood that a forward movement of the knob 150will be effective to draw the cam-selector arm 142 forwardly and intoengagement with a respective one of the slots 144 of the post 105.

The rearward cam-selector knob 151 is formed as an integral portion of aboss 156 which is slidingly and rotatably mounted upon the cross shaft143 and which carries the cam-selector arm 141 through the medium of aplurality of screws 157, 157. The cam-selector arm 141 has an auxiliaryarm member 158 which cooperates with a projecting arm portion 159 of thecam follower so that whenever the cam-selector knob 151 is drawn towardthe operator, the auxiliary arm 158 will engage the portion 159 of thecam follower for the purpose of turning the same in a counterclockwisedirection as viewed in Fig. 7 for the purpose of withdrawing thetracking member 109 from engagement with the cams and against the actionof the spring 130 in a manner as was hereinabove described in connectionwith the rearward cam follower 100. It will be understood that the rearcamselector knob 151 functions in the same manner as the forward knob inthat the turning movement of the former will be effective to raise andlower the forward 'cam follower 99 in the same manner as is effected inconnection with the rear cam follower 100.

Referring particularly to Fig. 14, the forward end portion of the crossshaft 143 is provided with a coil spring 160, the opposite ends of whichare biased against the internal portions of the cam-selector knobs 150and 151 ciatedthat the forward movement "of the shaft 143'and its :knob'150 underthe influence of the coil spring 160, will be arrested due tothe fact'that the rear cam-selector arm 142 will, throughthemediumof itsblade 139, en-

gage the rear upstanding post-105; The rearward movement-ofthe knob 151underthe influence of thespring 160 will be arrested by means ofa-stop;-member" 161 whichis carried upon a post 162;=threaded within'the for-' ward wall "portion 163 of the bracket-arm 8.

Referringparticularly to Figs. 1,3, 7, 14 and 47,,the

rearward cam-selector knob 151 is provided with a pointer 165 which.cooperates with an-indicia plate 166 carried upon the forwardface ofthe-bracket-arm-S by means of screws 167-.-167 to afford the operator avisual indicationas-to the position of therear cam follower 100.Likewise-the forward-cam-selector knob 150 carries'an indicator 168which passes -aslot 169 formed in the rear knob 151 so as ;to cooperatewith the indicia; plate 166" to-provide-a-visual=indication as to theposition of the cam-follower 99; Ash illustrated in Figs. 1; and 47, thearm 168 is adapted'to pointtoward one of a-plurality of indicia lettersgenerally designated by the numeral 165 cooperates in a similar mannerwithindicia letters 171 which likewise represent various cams.

As hereinabove indicated, each of the rotary cams 73 is non-concentricin the sense that it is provided at its peripheral portion with definiteprojections and grooves so as to provide a-particular pattern oflateralneedle Referring particularly to Figs; 1, 2, 3, 9 and lO, the

non-rotary cam member 86.is provided with the above noted handle 87which projects through an aperture 172 provided .inthe front wall of thebracket-arm 8 so that the-operator may grasp -this handleand shift. thesame back and forth to effect a turning movement of the member 86 aboutthe axis of the post member 68. As may be best observed in Fig. 47-, theindicia plate 166 is apertured as at 173 to allow for this handlemovement while an intermediate portion of the slot 173 is provided witha keeper slot 174 into which the handle 87 will be biased by means of aspring element 175 which connects .the arm 87 to the member 86. Fromthis, it will be ap- .preciated that the keeper slot 174 functionsnormally to maintain the handle 87 in an intermediate position and thatthe operator'may shift the handle from this position by biasing itdownwardly and shifting it sidewise either in a left or right handdirection.

As hereinabove mentioned, even though the shifting movement of thehandle 87 will not actuate the cam followers 99 and-100, it will shiftthe body portion 86 of the member about the aXisof post 68 and,consequentlyfthe groove 91in which the pitman ball 92 is located will beshifted sidewise to effect a sidewise movement of the right-handendportion of the pitman-93 to the end that the motion-integrating plate112 will be shifted laterally relative to the cam followers 99. and 100.Thus, 7

the actions of the cam followers and 100 will be integrated in adifferent manner to the end that the pattern of lateral needle-barmotion will be varied as the handle 87 is successively shifted back andforth. In this connection, it is to be understood that as the camfollowers 99 and 100 pivot backand forth about their respective posts101 and 105 in conformance with the rotary .motions of the stacked cams73, the motion integrating plate 112 will absorb these cam-followermotions by pivoting about: its trunnion-pins 114-114 and by shiftingback Special cam.

that-the'letters'K to R inclusive as noted on the indicia;plate'166"correspond respectively to the cams C to J inelusive,"so'that for example, when the pointers 165 and 170, each of whichlette'rs'corresponds to a respective= 25 one of the various abovementioned cams, while the arm -transmitzthe motions t'othe needle-bar10' in a manner as will hereinafter be described in more detail. Quiteobviously, 'thecam 'followers99- and ltitlmaybe placed in engagementwith a single one of the various camsor in the alternative theoperatormay-place the followers in contact with different cams thereby;to effect variouscombinations of movements.

Although the present invention contemplates-the usage of differentcombinations ofcams, the form of the invention illustratedin'the presentdrawings is so constructed that the rear camfollower 100 may be shiftedinto engagement with any one off'the earns 73 and which in Fig. 9 arelabeled individually by the letters Aw I inclusive,-and-by"theword'Sp,ecial. The forward cam follower99, however, is adaptedto engageonly those cams which bear the lettersC to J inclusive as well as the Inthis-connection, it is-to beunderstood 168 are respectivelyset adjacentthe'letters K and C the cam followers 109 andlll) will each engage thesame cam.

' These letters havebeen placed on the indicia plate to assist theoperator in selecting various ornamental stitch patterns which, as'isshown-in Fig. 4-5, are illustrated on 'aninstruction-plate generallydesigned by the numeral 180, whichplate may be'secured to the insideportion of Quite obviously, however, the patterns-illustrated onthisplate are'merely a few of those which itis possible to produce with-amachine of'this type. The instruction plate 180 does not give anyinformation as regards the i use of the so-called Special cam and, ashereinabove from zero to maximum either across a'center linethrough ;Aand K settings of the knobs 150 and 151 produces pointed-out, variousspecial cams may-be substituted to provide patterns in-accordance withthe requirements of various typ'esof work.

Thisinstruction plate 180 with its associated mechanism is disclosed andclaimed in my copending U. S. continuation-impart patent applicationSerial No. 591,718, filed June 15, 1956, now Patent No. 2,848,963.

From the above, it is to be appreciated that the manually controlledlever 87 which'actuates the lower three cams A, Band C, .as well'as theguide groove 91 for the pitman ball'92, has two functions of which thefirst is to provide conveniently controllable means for determining aneutral position of non-vibration of the needle at the center or ateither side of the field of lateral throw of the needle, whereby theneedle may be caused-to perform straight stitching along a center linethrough'the field or along a line disposed entirely at either of thetWQ'SidCS ofthe field. Also by the use of this means as well as thevarious-cams, the needle can be caused to vibrate laterally the field orentirely from either of the two sides of the field.

Fig. 11, diagrammatically illustrates the number 3 (see Figr47) orcentral positionof the arm 87 which with the straight stitching along aline 43 running centrally through the field of lateral needle vibration.

Fig. l2illustrates the number 5 or right-hand position of the arm 87which with the A and K settings of the knobs and 151' produces straightstitching along a line dis-

